我已经对我的Java应用程序运行了Checkmarx工具以查找安全漏洞,但它一直出现Heap Inspection问题。该问题是针对我使用字符数组作为密码字段的声明而发生的,除了指出密码字段的声明外,它没有提供任何更多的解释。
private char[] passwordLength;
有人能帮我解决这个问题吗?还能找些什么来解决它?
我已经对我的Java应用程序运行了Checkmarx工具以查找安全漏洞,但它一直出现Heap Inspection问题。该问题是针对我使用字符数组作为密码字段的声明而发生的,除了指出密码字段的声明外,它没有提供任何更多的解释。
private char[] passwordLength;
有人能帮我解决这个问题吗?还能找些什么来解决它?
我认为您应该使用SealedObject
将凭据数据加密存储在JVM内存中。
您需要以下软件包:
因此,您需要创建:
请看这个回答,针对“覆盖String中char[]的值是否更安全”的问题,来自security.stackexchange.com。
简而言之:您无法为此做太多事情。
附言:因为那是一个姊妹站点,我不会在这里复制回答(而且太长了)。如果管理员不同意,请随意复制/粘贴。
Checkmarx堆检查安全漏洞 大家好,当我在我的Spring应用程序中使用String类型的变量作为密码时,我遇到了这个问题。如下所示:
class User {
private String username;
private String password;
//setter
//getter
}
import java.security.SecureRandom;
import java.util.Arrays;
/**
* This is not a string but a CharSequence that can be cleared of its memory.
* Important for handling passwords. Represents text that should be kept
* confidential, such as by deleting it from computer memory when no longer
* needed or garbage collected.
*/
/**
* Created by Devendra on 16/04/2020
*/
public class SecureString implements CharSequence {
private final int[] chars;
private final int[] pad;
public SecureString(final CharSequence original) {
this(0, original.length(), original);
}
public SecureString(final int start, final int end, final CharSequence original) {
final int length = end - start;
pad = new int[length];
chars = new int[length];
scramble(start, length, original);
}
@Override
public char charAt(final int i) {
return (char) (pad[i] ^ chars[i]);
}
@Override
public int length() {
return chars.length;
}
@Override
public CharSequence subSequence(final int start, final int end) {
return new SecureString(start, end, this);
}
/**
* Convert array back to String but not using toString(). See toString() docs
* below.
*/
public String asString() {
final char[] value = new char[chars.length];
for (int i = 0; i < value.length; i++) {
value[i] = charAt(i);
}
return new String(value);
}
/**
* Manually clear the underlying array holding the characters
*/
public void clear() {
Arrays.fill(chars, '0');
Arrays.fill(pad, 0);
}
/**
* Protect against using this class in log statements.
* <p>
* {@inheritDoc}
*/
@Override
public String toString() {
return "Secure:XXXXX";
}
/**
* Called by garbage collector.
* <p>
* {@inheritDoc}
*/
@Override
public void finalize() throws Throwable {
clear();
super.finalize();
}
/**
* Randomly pad the characters to not store the real character in memory.
*
* @param start start of the {@code CharSequence}
* @param length length of the {@code CharSequence}
* @param characters the {@code CharSequence} to scramble
*/
private void scramble(final int start, final int length, final CharSequence
characters) {
final SecureRandom random = new SecureRandom();
for (int i = start; i < length; i++) {
final char charAt = characters.charAt(i);
pad[i] = random.nextInt();
chars[i] = pad[i] ^ charAt;
}
}
}
Created custom property editor as :
import java.beans.PropertyEditorSupport; import org.springframework.util.StringUtils;
public class SecureStringEditor extends PropertyEditorSupport {
@Override
public String getAsText() {
SecureString value =(SecureString) getValue();
SecureString secStr = new SecureString(value);
return (value != null) ? secStr.asString() : "";
}
@Override
public void setAsText(String text) throws java.lang.IllegalArgumentException {
if (StringUtils.isEmpty(text)) {
setValue(null);
} else {
setValue(new SecureString(text));
}
}
}
Register this custom property editor to spring-bean.xml file as :